JP2001344288A - Design plotting system for integrated parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a design plotting system for integrated parts which divides integrated parts into individual fundamental graphic elements to design and plot them. SOLUTION: Input of parameters required to constitute fundamental graphic elements is requested in accordance with these fundamental graphic elements which are successively selected by fundamental graphic element insertion buttons 11a to 11i, and a design program is provided which automatically generates design information of fundamental graphic elements on the basis of inputted parameters and automatically generates coordinate information for every fundamental graphic element so that they may be connected to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for designing and drawing integrated parts used for designing and drawing integrated parts such as screw parts and rivets of various shapes.

[0002]

2. Description of the Related Art As integral parts, screw parts are generally well known. Conventionally, screw parts supplied to the market are standardized by Japanese Industrial Standards (JIS) or the like. As a system for designing this, basic types of screws such as pan head and countersunk head, length under the neck,
CA that inputs the length of the thread, the diameter of the thread, and the pitch of the thread, and draws and displays the design drawing on the screen based on this data.
The D system is generally widely used.

[0003]

However, with the recent diversification of product configurations and strict quality control, the performance required of screw components has also diversified. It was necessary to make each part of the shape not specified in the standard. In this regard, it is necessary for the designer to design a screw part that satisfies the required shape each time,
There have been problems such as an increase in design cost. Also,
For screw parts standardized in JIS, etc., it was possible for the customer to grasp the external appearance to some extent without drawing etc., but for screw parts outside the standard, the design is special. However, it is difficult for the customer to recognize the design even if the design drawing is presented to the customer, and there has been a problem that a discrepancy between the design required by the customer and the actual product occurs. On the other hand, a conventional CAD system has a function of automatically generating machining information for an NC lathe for machining the threaded component according to the designed threaded component. Since the machining information is machining information in which the entire threaded component is regarded as one unit, there has been a problem that the information is complicated and has a large capacity.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has an arrangement for inputting parameters necessary for constructing a basic graphic element in accordance with a basic graphic element which is sequentially selected. A design program for automatically generating design information of the basic graphic elements based on the obtained and input parameters and automatically generating coordinate information for each of the basic graphic elements so that the basic graphic elements are connected to each other. It is characterized by the following.

The basic graphic element has an axially symmetrical shape, and coordinate information of each basic graphic element is automatically generated such that the axis of symmetry coincides with a predetermined center line and the basic graphic elements are connected to each other. Is preferred. Further, it is preferable that the design information and the coordinate information of the basic graphic element are generated so as to be connected to the basic graphic element selected from the basic graphic elements for which the design information has already been generated. Further, it is preferable that the basic graphic element is three-dimensionally displayed on the display means based on the design information and the coordinate information. In addition, it is preferable to generate processing information required for processing an integrated part in basic graphic element units.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an integrated component design / drawing system constituted by a personal computer, which includes a personal computer body 2 serving as a control unit and a pointing device 3 (hereinafter referred to as a mouse 3) which is an input means for receiving information input from a designer. And a keyboard 4 and a monitor 5 which is a display means for displaying various information.

The personal computer 2 has installed therein a design program including various procedures to be described later, various system files and data files for executing the design program, and the like. It is configured to perform processing based on.

The processing of the design program will be described with reference to display on a monitor 5 and the like. When the design program is started by operating the mouse 3 or the keyboard 4, a GUI (Graphic User Interface) is displayed on the monitor 5. As a result, a drawing window 10 is displayed as shown in FIG. In the drawing window 10, the coordinate axes X, Y, and Z are used.
A three-dimensional coordinate system is shown, in which a coordinate axis X is set as a center line when displaying a basic graphic element.

In the drawing window 10, basic graphic element insertion buttons 11a to 11i (hereinafter, graphic insertion buttons) to which an event procedure (hereinafter referred to as an element design procedure) which is a program for designing various basic graphic elements are assigned. 11a to 11i) are provided. In the embodiment of the present invention, as shown in FIG. 3, as the figure insertion buttons, a screw hole insertion button 11a, a prism insertion button 11b, a cylinder insertion button 11c, a screw part insertion button 11d, a pan insertion button 11e, a pulley shape An insert button 11f, a truncated cone button 11g, a concave curved truncated cone button 11h, and a convex curved truncated cone button 11i are provided. By the way, the concave truncated cone shown here is
As shown in FIG. 4A, the tapered surface of the truncated cone indicates a curved shape depressed in the axial direction.
As shown in (b), the tapered surface of the truncated cone is curved so as to expand outward.

When a desired figure insertion button is clicked with the mouse 3 among these figure insertion buttons 11a to 11i, a corresponding element design procedure is started, and the specific shape of the basic figure element is changed as shown in FIG. Parameter input form 12 for inputting parameters required for specification
Is displayed on the screen. FIG. 1 shows a parameter input form 12 for a screw portion.

The parameters are different for each of the basic graphic elements. Basically, each element design program is configured so that the minimum parameter necessary for specifying the shape and size of the basic graphic elements is sufficient. Have been. For example, in the case of a cylinder, the shape can be specified by inputting the diameter and the length in the axial direction. Therefore, these two parameters are required to be input. The parameters are the diameter, the axial length, and the curvature of the peripheral surface.

When necessary parameters are input to the parameter input window 12, design information of the basic graphic elements is automatically generated based on the parameters, and the basic graphic elements are generated based on the design information.
0 is displayed three-dimensionally. At this time, the coordinate information is determined so that the symmetry axis of the basic graphic element coincides with the center line (= coordinate axis X) of the drawing window 10, whereby the basic graphic element sets its symmetry axis at the center of the drawing window 10. It is displayed in a state where it is matched with the line (coordinate axis X). Direct3D is used for the processing of the three-dimensional display. Direct3D
Is a stereoscopic drawing system widely used in personal computer game software and the like, and a detailed description thereof will be omitted here.

Thereafter, when the next basic graphic element is selected (the desired graphic insert button is clicked with the mouse 3), a window 12 for inputting parameters of the basic graphic element is displayed. The design information of the basic graphic element and the coordinate information necessary for connecting the basic graphic element to the foremost basic graphic element on a coaxial line are automatically generated. Then, based on the design information and the coordinate information, a new basic graphic element is three-dimensionally displayed in a state where the new basic graphic element is connected to the basic graphic element displayed first on the screen and the symmetry axis coincides with the center line. As described above, since the processing for automatically generating both the design information and the coordinate information with the minimum parameter input is performed, complicated work such as the designation of coordinates when designing the integrated part is unnecessary, and the basic graphic elements are combined. The design of an integral part can be performed very easily.

In the above-described integral part design / drawing process, the basic graphic element connected to the "screw drive hole", which is one of the basic graphic elements, has its coordinates so that the screw drive hole is incorporated into its end face. Information is automatically generated. In this drawing processing, as shown by reference numeral I in FIG. 7A, parameters for each basic graphic element are automatically displayed in the right end of the drawing window 10 in the order of the basic graphic elements. It is possible to visually recognize not only the three-dimensional shape of the integrated part but also its design information.

The above contents will be described more specifically with reference to FIG. FIG. 6 shows an example of a process of designing a screw component by combining basic graphic elements. 1) First, a screw drive hole is selected, and a desired shape and size are designated. Based on this, detailed design information and coordinate information are automatically generated, and a screw drive hole is displayed on a monitor based on the information. (S001) 2) Next, when a cylinder is selected and parameters of the diameter and the axial length of the cylinder are input, the design information of the cylinder and the coordinate information relative to the drive hole of the screw corresponding to the values are automatically generated. The cylinder is displayed on the screen based on this. (S0
02) At this time, the screw drive holes previously displayed on the screen are automatically incorporated into the ends of the cylinder. (S003) 3) Next, the pulley shape is selected, and the diameter of the pulley shape is selected.
When the thickness and the radius of the outer circumferential groove are input, the design information of the pulley shape and the coordinate information relative to the cylinder corresponding to the input values are automatically generated, and the pulley shape is displayed on the screen in connection with the subsequent cylinder. (S004) 4) When the shape of the pulley is selected again and parameters are input, the design information and coordinate information relative to the previous pulley shape are automatically generated. Based on this, another one connected to the previous pulley shape is generated. The pulley shape is displayed. (S0
05) 5) Next, select the thread and input the parameters of thread length, thread pitch, thread diameter, valley diameter, and valley width. Then, detailed design information of the thread and pulley Coordinate information relative to the shape is automatically generated, and based on this,
The thread is displayed in connection with the pulley shape. (S00
6) In this way, a screw component consisting of a screw drive hole, a cylinder, two types of pulley shapes, and a screw portion is designed and drawn. As described above, the design information of the basic graphic elements and the relative coordinate information for each basic graphic element are automatically generated, and the basic graphic elements are automatically displayed in conjunction with each other. Even so, it is possible to design and draw very easily.

In the process of designing and drawing a screw component as described above, the control unit controls the NC for processing the screw component.
Machining information such as a machining program in a lathe is generated for each basic graphic element based on design information and coordinate information for each basic graphic element. By generating the processing information in basic graphic element units as described above, the processing information can be simplified and the capacity thereof can be reduced as compared with the case where the processing information is generated in units of the entire screw part. .

In the drawing window 10, graphic designation buttons 13a and 13 for starting an event procedure for graphic designation are provided.
b is provided, and the figure selection buttons 13a, 13
By clicking any one of b with the mouse 3, the basic graphic elements can be sequentially specified. As shown in FIG. 7A, the designated basic graphic element is displayed in a color scheme different from the others so that the designation can be visually recognized. By the way, in FIG. 7A, the display is shaded for convenience, but the invention is not limited to this. When the desired basic graphic element is designated in this manner and the delete button 14 is clicked, the graphic delete event procedure assigned to the delete button 14 is started, and the specified basic graphic element is deleted from the drawing window 10. Is done. At this time, the coordinate information of the basic graphic element following the deleted basic graphic element is automatically corrected so as to be connected to the basic graphic element located immediately before the deleted basic graphic element. Based on this, as shown in FIG. 7B, the display is corrected, and the processing information is also corrected.

When a desired basic graphic element is designated and a parameter correction button 15 is clicked, this button 1
The event procedure of the parameter modification assigned to 5 is activated, and the parameter input form 12 of the basic graphic element is displayed again. When the parameters are corrected here, the design information and the coordinate information of the basic graphic element and the coordinate information of the subsequent basic graphic element are automatically corrected in accordance with the parameter, and based on this, the drawing information is displayed on the drawing window. And the processing information is corrected.

When a desired basic graphic element is designated and any of the basic graphic element insertion buttons 11a to 11i is clicked, a new basic graphic element is placed between the designated basic graphic element and the basic graphic element connected thereto. Graphic elements can be inserted. Also at this time, display correction and processing information correction are performed.

In the embodiment of the present invention, a specific example of designing a screw component comprising a screw drive hole, a cylinder, two pulley shapes, and a basic graphic element of a screw portion has been described. Such a design system can freely add and combine other basic graphic elements, and also includes other integrated parts, such as rivets, other than screw parts having no screw drive holes and screw parts. It can be freely designed by combining basic graphic elements.

[0021]

According to the screw part design / drawing system of the present invention, even if it is an integral part such as a screw part having a special shape by a combination of basic graphic elements, it can be designed very easily even without a skilled designer.・ Drawing can be performed. Further, since the integrated parts are three-dimensionally displayed on the screen, there is an advantage that the design can be easily grasped and the integrated parts desired by the customer can be provided. Further, since it is possible to change parameters for each basic graphic element and to add a new basic graphic element to an arbitrary position, a simple and extremely flexible design is possible. On the other hand, since processing information is generated in basic figure units, there is an advantage that processing information can be provided as a simple and small-capacity one.
Even when transferring processing information using a network,
There is also an advantage that processing information can be transferred in a short time.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a design drawing system for an integrated part.

FIG. 2 is an explanatory diagram showing a display form of a drawing window.

FIG. 3 is a partially enlarged explanatory view of a main part of a drawing window.

4A is an explanatory diagram showing a concave truncated cone, and FIG. 4B is an explanatory diagram showing a convex truncated cone in a three-dimensional display format.

FIG. 5 is an explanatory diagram showing a display form of a parameter input form.

FIG. 6 is an explanatory diagram showing an example of a process of designing a screw component by combining basic graphic elements.

7A is an explanatory diagram showing a state in which a basic graphic element is designated, and FIG. 7B is an explanatory diagram showing a display form after deleting the basic graphic element designated in FIG. .

[Explanation of symbols]

 1 PC 2 PC body 3 Pointing device 4 Keyboard 5 Monitor 10 Drawing window 11a-11i Basic graphic element insertion button 12 Parameter input form 13a, 13b Graphic designation button 14 Delete button 15 Parameter correction button

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[Procedure amendment]

[Submission date] December 13, 2000 (200.12.
13)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

FIG. 4

FIG. 5

FIG. 6

FIG. 7

Claims (5)

[Claims] An input required for forming a basic graphic element is determined in accordance with a basic graphic element sequentially selected, and design information of the basic graphic element is automatically generated based on the input parameter. A design program for automatically generating coordinate information for each basic graphic element so that the basic graphic elements are connected to each other. 2. The basic graphic element has an axially symmetrical shape, and coordinate information of each basic graphic element is automatically generated such that the axis of symmetry coincides with a predetermined center line and the basic graphic elements are connected to each other. The system for designing and drawing integrated parts according to claim 1, wherein: 3. The basic graphic element according to claim 1, wherein design information and coordinate information are generated so as to be connected to a basic graphic element selected from basic graphic elements for which design information has already been generated. Item 3. The system for designing and drawing integrated parts according to item 1 or 2. 4. The system according to claim 1, wherein the basic graphic element is three-dimensionally displayed on a display means based on the design information and the coordinate information. 5. The integrated component design and drawing system according to claim 1, wherein machining information required for processing the integrated component is generated in basic graphic element units.